Professor of Geochemistry, University of Iowa

Åbo Akademi University

Department of Mathematics, Abdul Wali Khan University Mardan

Professor of Soil Feritlity, University of Illinois at Urbana - Champaign

Research Director, IGG-CNR

Food and Drug safety Research Center, Tabriz University of Medical Sciences

University of Oxford

Universitat Rovira i Virgili

Professor, Department of Applied Chemistry, Kyung Hee University

Professor of Environmental Engineering, Wayne State University